The Fast and the Furious: Cooperative C−H, C−S, C-C, and C−O Bond Activation by Nickel

Seminar: Inorganic Chemistry | September 1 | 4-5 p.m. | 120 Latimer Hall

 Prof. Samuel Johnson, Department of Chemistry & Biochemistry, University of Windsor

 College of Chemistry

Nickel complexes are often less adept at the activation and functionalization of unreactive bonds than second and third row transition metals. In contrast, the ability of Ni metal surface sites to readily activate C-H and C-C under ambient conditions has found use in high temperature catalytic reactions that involve skeletal rearrangements of C-H, C-C and C-O bonds. Cooperativity amongst adjacent transition metal has been proposed for decades as a design strategy to render molecular complexes capable of difficult bond transformations; however, dramatic examples of cooperativity similar to that observed on metal surfaces are rarely actualized. This talk will address the limitations of mononuclear Ni complexes in inert bond activation, and a pentanuclear Ni cluster [(iPr3P)Ni]5H6¬ capable of reactivity reminiscent of the most reactive surface sites.

 Light refreshments will be served at 3:50 at The Coffee Lab, 510-643-0572